linux-kernel - Re: [PATCH][SMACK] add a socket_post_accept hook to fix netlabel issueswith labeled TCP servers V1

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Message-Id: <200902250649.BIF17188.FFOLSVOtJQHOMF@I-love.SAKURA.ne.jp>
Date:	Wed, 25 Feb 2009 06:49:22 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	etienne.basset@...ericable.fr
Cc:	casey@...aufler-ca.com, paul.moore@...com,
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: Re: [PATCH][SMACK] add a socket_post_accept hook to fix netlabel issueswith labeled TCP servers V1

etienne wrote:
> The following patch  adds a "post_access" hook to get the client IP and check it against the netlabel list. 

Oh, SMACK starts to use security_socket_post_accept() hook?

Then why not move security_socket_post_accept() to before fd_install()?
If file descriptor table is shared between multiple processes,
another process can reach not-yet-labeled-by-security_socket_post_accept()
accept()ed socket.

(Well, I'm happy if security_socket_post_accept() can return error
because TOMOYO wants to implement personal firewall.)
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